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Harris® 4043 Aluminum Silicon alloy is very commonly used to weld on 6XXX base materials and other heat treatable alloys. Harris® 4043 is a soft alloy, with good crack resistance and high penetration compared to other filler metals. It can be used for certain brazing applications and to weld on high silicon casts like A356. Welding of 5XXX base materials with 4043 and other 4XXX filler metals should be avoided.

Features

  • Low sensitivity to weld cracking with the 6XXX series base alloys
  • Lower melting point and more fluidity than the 5XXX series filler alloys
  • Gray color (post anodized)
  • Designed for welding heat treatable base alloys, specifically 6XXX series alloys
  • Marked with model number on each end for easy identification after use
  • All-position welding
  • Often used for repair welding aluminum/silicon cast alloys such as grades 353/A356
  • Common choice for welding 6061
  • Weight: 1.04 lbs
  • Material: Aluminum Silicon alloy
  • Silicon Content: 4.5-6.0%
  • Titanium Content: 0.20% max
  • Magnesium Content: 0.05% max
  • Copper Content: 0.30% max
  • Manganese Content: 0.05% max
  • Beryllium Content: 0.0003% max
  • Zinc Content: 0.10% max
  • Iron Content: 0.80% max
  • Others Content: 0.15% max total
  • Solidus Temperature: 1065 F (574 C)
  • Liquidus Temperature: 1170 F (632 C)
  • Density: 0.097 lbs/cu in
  • Tensile Strength (As Welded 6061 Base Plate): 27,000 psi
  • Yield Strength (As Welded 6061 Base Plate): 18,000 psi
  • Specification Compliance: ANSI/AWS A5.10 Class R/ER 4043, ASME SFA 5.10, AMS 4190
  • Welding Positions: All-position

Downloads

    Spec Sheet